Helmet



FIG. 1 is a perspective view of a helmet showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view thereof, shown in a used condition worn over a child's face shown in broken lines.

The broken lines shown in the drawing views are included for the purpose of showing environmental structure that forms no part of the claimed design. 

CLAIM The ornamental design for a helmet, as shown and described. 